Convert milliseconds to hours, minutes, and seconds

Posted 03 May 2012 - 08:01 PM

So this is embarrassing, but I needed to re-do a lab since my teacher lost it and I deleted the file! I would appreciate any guidance. I think the title is self explanatory , so I am pretty much stuck with some of my math and am getting an error - it says it cannot find symbol 'convert' on line 13?